pygcn 0.1.9

The Gamma-ray Coordinates Network/Transient Astronomy Network (GCN/TAN,
http://gcn.gsfc.nasa.gov) is a system for distributing astronomical alerts,
largely focused on operations of and detections from high-energy satellite
missions.

GCN/TAN disseminates both Notices (prompt, machine-readable alerts) and
Circulars (human-readable correspondence) through a handful of delivery methods
and formats.